Scientists confirm barrier between inner and outer regions of the young solar system


Composition of asteroids, meteorites, planets impacted by an abyss in protoplanetary dust, gas

Scientists have found evidence of a barrier between the inner and outer regions of the young solar system.

By analyzing the composition of ancient meteorites, researchers at the Massachusetts Institute of Technology, funded by the U.S. National Science Foundation, identified evidence of a barrier between the inner and outer regions of the solar system when the planets emerged. dust and gas orbiting the sun. . The team published their research in Science Advances.

Analysis suggests that billions of years ago there was a sinkhole or gap in the solar system near the asteroid belt. The sinkhole could have been caused by the formation of Jupiter or by cosmic winds generated by the magnetic fields of a growing solar system.

The sinkhole acted as a barrier that influenced the formation of an emerging planetary system and impacted the makeup of asteroids, meteorites, and planets. This finding could explain the isotopic dichotomy – why most asteroids have singular, unshared isotopic structures.

“Over the past decade, observations have shown that cavities, vacancies, and rings are common in disks around other young stars,” said Benjamin Weiss, an MIT scientist. “These are important but poorly understood signatures of the physical processes by which gas and dust transform into young suns and planets.”

Added lead author, Cauê Borlina, “Gaps are common in protoplanetary systems, and we now show that we had one in our own solar system. This provides an answer to the bizarre dichotomy we see in meteorites and provides evidence that the gaps affect the makeup of the planets.

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